SPAN or I tag with class="iconify-inline" and data-icon:
<iconify-icon inline icon="fa-solid:home"></iconify-icon>
<iconify-icon inline icon="mdi-account-off"></iconify-icon><br />

SPAN or I tag with class="iconify" and data-icon:
<iconify-icon
	class="some-custom-class"
	icon="flat-color-icons:cancel"
></iconify-icon>
<iconify-icon icon="mdi:account-off"></iconify-icon>
